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Finding the Fourth Proportional to 551,042.42, 760,463.80 and 306,028.30

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Solution

The fourth proportional to 551,042.42, 760,463.80 and 306,028.30 is: 422,333.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,042.42 : 760,463.80 = 306,028.30 : x
  2. Step 2: Convert to fraction form
    551,042.42/760,463.80 = 306,028.30/x
  3. Step 3: Cross multiply
    551,042.42x = 760,463.80 × 306,028.30
  4. Step 4: Simplify right side
    551,042.42x = 232,723,441,259.31
  5. Step 5: Solve for x
    x = 232,723,441,259.31/551,042.42
  6. Step 6: Final answer
    x = 422,333.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.